Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Financial Risk Management - Disclosure of Market Risk (Details)

v3.21.1
Financial Risk Management - Disclosure of Market Risk (Details) - NZD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Trade Receivables [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets $ 101 $ 480 $ 378
Trade Receivables [Member] | AUD [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 51
Trade Receivables [Member] | US [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets (2) 19 42
Trade Receivables [Member] | GBP [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 13 20
Trade Receivables [Member] | EUR [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 90 441 285
Trade Receivables [Member] | HKD [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets
Trade Payables [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial liabilities 761 4,168 9,112
Trade Payables [Member] | AUD [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial liabilities 20 12 1
Trade Payables [Member] | US [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial liabilities 741 4,068 9,035
Trade Payables [Member] | GBP [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial liabilities 85 8
Trade Payables [Member] | EUR [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial liabilities 1 61
Trade Payables [Member] | HKD [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial liabilities 2 7
Cash and Cash Equivalents [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 88,552 2,341 829
Cash and Cash Equivalents [Member] | AUD [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 9,943 1,500 623
Cash and Cash Equivalents [Member] | US [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 78,506 747 149
Cash and Cash Equivalents [Member] | GBP [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 89 85 38
Cash and Cash Equivalents [Member] | EUR [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets 12 5 8
Cash and Cash Equivalents [Member] | HKD [Member]      
Statement Line Items [Line Items]      
Foreign currency denominated financial assets $ 2 $ 4 $ 11